(3S,3aR,6aS)-3-hydroxyhexahydrofuro<2,3-b>furan
1-[[[(3R,3aS,6aR)-hexahydrofuro[2,3-b]furan-3-yloxy]carbonyl]oxy]pyrrolidine-2,5-dione
darunavir
rel-(3R,3aS,6aR)-hexahydrofuro[2,3-b]-furan-3-yl 4-nitrophenyl carbonate
(3R,3aS,6aR)-hexahydrofuro[2,3-b]furan-3-ol